Yep, thank you. So a copy of an HD wallet saved in a safety deposit box, will always have the same balance as the original, no matter how many transactions and addresses are made? and the password isn't changed.
As long as the password hasn't changed... Yes.
The copy will be capable of generating all the same private keys, and then can scan the blockchain to determine which bitcoins is has control over.
Of course, if you've forgotten your password you'll have difficulty spending any of it, so make sure you pick one you'll remember.
Of course, if someone else gains access to that copy and can determine your password, they'll have access to all your bitcoins even if you still have your original wallet. So, make sure you keep that copy secure, and use a password that will be difficult for someone else to guess or brute force.